Intestinal immune system stimulator

Abstract

Disclosed is an agent, γ-glutamylcysteine, which can effectively and safely stimulate the intestinal immune system. γ-Glutamylcysteine can be formulated in a pharmaceutical composition, a food, and/or a beverage, and used for the treatment or prevention of infectious diseases, diarrhea, polyps, tumors, enteritis or allergy.

1 . A method for stimulating the intestinal immune system in a subject in need of stimulation of the intestinal immune system comprising administering a composition comprising γ-glutamylcysteine to the subject. 
     
     
         2 . The method of  claim 1 , wherein said γ-glutamylcysteine is present in the composition in an amount of 0.000001% or more by mass. 
     
     
         3 . A method for treating or preventing a condition selected from the group consisting of an infection, diarrhea, polyp, tumor, enteritis, allergy, and combinations thereof, said method comprising administering a composition comprising γ-glutamylcysteine to a subject having said condition. 
     
     
         4 . The method of  claim 3 , wherein said γ-glutamylcysteine is present in said composition in an amount of 0.000001% or more by mass.